2015 Audi A4 Electrical Switch & Relay Parts

This table covers the relays that control the A/C Condenser Fan Motor circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is. Read more

This group shows a single part: HELLA 933332451.

This table covers the pressure switches on the A/C circuit. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too. Read more

4 A/C Refrigerant Pressure Switch parts for the 2015 Audi A4 come from 4 brands — FOUR SEASONS, MAHLE / CLEVITE, UAC and 1 other brand.

This group includes FOUR SEASONS 37427, MAHLE / CLEVITE ASE21000P and UAC SW11224C and the remaining parts above.

This table covers the relays that control the ABS circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is. Read more

2 ABS Relay parts for the 2015 Audi A4 come from 2 brands — STANDARD MOTOR PRODUCTS and WELLS.

This group includes STANDARD MOTOR PRODUCTS RY577 and WELLS 1R2303.

This table covers the relays that control the Accessory Power circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is. Read more

3 Accessory Power Relay parts are listed for the 2015 Audi A4, from HELLA, STANDARD MOTOR PRODUCTS and WELLS.

Part numbers include HELLA 933332451, STANDARD MOTOR PRODUCTS RY577 and WELLS 1R2303.

This table covers the pedal-mounted switch that turns on the brake lamps. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too. Read more

4 Brake Light Switch parts for the 2015 Audi A4 come from 4 brands — DORMAN, ROSTRA, STANDARD MOTOR PRODUCTS and 1 other brand.

The Economy section lists 1 option from DORMAN — the catalog's value-priced group. DORMAN 920497 is listed in this group.

In the Standard Replacement grade, ROSTRA, STANDARD MOTOR PRODUCTS and WELLS supply 3 parts: built to original-equipment specification. A representative part number is ROSTRA 620127.

Part numbers include DORMAN 920497, ROSTRA 620127 and STANDARD MOTOR PRODUCTS SLS488, among others listed above.

This table covers the Cruise Control switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too. Read more

7 Cruise Control Switch parts are listed for the 2015 Audi A4, from ROSTRA and WELLS. WELLS 1S14794 carries the "Popular" badge.

This group includes WELLS 1S14794, ROSTRA 641017 and ROSTRA 641018 and the remaining parts above.

This table covers the dimmer switches that select headlamp high and low beam. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too. Read more

7 Dimmer Switch parts are listed for the 2015 Audi A4, from ROSTRA and WELLS. WELLS 1S14794 carries the "Popular" badge.

Listed part numbers: WELLS 1S14794, ROSTRA 641017 and ROSTRA 641018, plus the other parts above.

This table covers the relays that control the Fog / Driving Lamp circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is. Read more

This group shows a single part: HELLA 933332451.

This table covers the Fog / Driving Lamp switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too. Read more

4 Fog / Driving Lamp Switch parts are listed for the 2015 Audi A4, from ROSTRA and WELLS.

Listed part numbers: ROSTRA 650733, ROSTRA 651299 and WELLS 1S14792, plus the other parts above.

This table covers the relays that control the Fuel Pump / Circuit Opening circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is. Read more

3 Fuel Pump / Circuit Opening Relay parts for the 2015 Audi A4 come from 3 brands — HELLA, STANDARD MOTOR PRODUCTS and WELLS.

Part numbers include HELLA 933332451, STANDARD MOTOR PRODUCTS RY577 and WELLS 1R2303.

This table covers the Hazard Warning switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too. Read more

2 Hazard Warning Switch parts are listed for the 2015 Audi A4, from STANDARD MOTOR PRODUCTS and WELLS.

Part numbers include STANDARD MOTOR PRODUCTS HZS279 and WELLS 1S12829.

This table covers the column or dash switches that control the exterior lamps. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too. Read more

5 Headlamp Switch parts are listed for the 2015 Audi A4, from WELLS, ROSTRA and STANDARD MOTOR PRODUCTS. WELLS 1S14792 carries the "Popular" badge.

Part numbers include WELLS 1S14792, ROSTRA 650733 and ROSTRA 651299, among others listed above.

This table covers the relays that control the Horn circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is. Read more

One part is listed for the 2015 Audi A4 — WELLS 1R2303.

This table covers the ignition switches that feed the starter circuit. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too. Read more

2 Ignition Starter Switch parts are listed for the 2015 Audi A4, from STANDARD MOTOR PRODUCTS and WELLS.

Listed part numbers: STANDARD MOTOR PRODUCTS US1471 and WELLS 1S15906.

This table covers the Instrument Panel Dimmer switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too. Read more

4 Instrument Panel Dimmer Switch parts for the 2015 Audi A4 come from 2 brands — ROSTRA and WELLS.

This group includes ROSTRA 650733, ROSTRA 651299 and WELLS 1S14792 and the remaining parts above.

This table covers the relays that control the Multi-Function circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is. Read more

2 Multi-Function Relay parts for the 2015 Audi A4 come from 2 brands — BOSCH and WELLS.

Part numbers include BOSCH 0986AH0307 and WELLS 1R1007.

This table covers the Neutral Safety Switch / Range sensors. Typical signs include a warning lamp, a stored code, or a reading that drops out when the harness is wiggled. Inspect the connector and ground before replacing the sensor — wiring faults are often condemned as bad sensors. Read more

This group shows a single part: STANDARD MOTOR PRODUCTS NS769.

This table covers the senders and switches that report oil pressure to the gauge or lamp. Typical signs include a lamp that stays on, or a gauge that never moves. Confirm power and ground at the connector before replacing the sender or switch. Read more

12 Oil Pressure Sender / Switch parts for the 2015 Audi A4 come from 6 brands — STANDARD MOTOR PRODUCTS, HOLSTEIN, BECK/ARNLEY and 3 other brands. The "Popular" part is BECK/ARNLEY 2011754.

The Economy section: 2 options from HOLSTEIN and ÜRO PARTS. HOLSTEIN 2OPS0056 is listed in this group.

Standard Replacement: 9 parts, from STANDARD MOTOR PRODUCTS, BECK/ARNLEY, GPD and 1 other brand. A representative part number is BECK/ARNLEY 2011754.

1 further part sits outside the graded sections, with the same engine-level match.

This table covers the switches that command each window motor. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too. Read more

6 Power Window Switch parts for the 2015 Audi A4 come from 3 brands — ÜRO PARTS, WELLS and MARELLI. The "Popular" part is ÜRO PARTS 8K0959855BV10.

The Economy section: 2 options from ÜRO PARTS. ÜRO PARTS 8K0959855BV10 is listed in this group.

Standard Replacement: 2 parts, from WELLS. A representative part number is WELLS 1S13086.

2 further parts sit outside the graded sections, with the same engine-level match.

Listed part numbers: ÜRO PARTS 8K0959855BV10, ÜRO PARTS 8K0959851FV10 and WELLS 1S13086, plus the other parts above.

This table covers the relays that control the Radiator Fan circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is. Read more

One part is listed for the 2015 Audi A4 — HELLA 933332451.

This table covers the relays that control the Starter Motor Control circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is. Read more

2 Starter Motor Control Relay parts are listed for the 2015 Audi A4, from STANDARD MOTOR PRODUCTS and WELLS.

Part numbers include STANDARD MOTOR PRODUCTS RY577 and WELLS 1R2303.

This table covers the Trunk Lid / Tailgate Release switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too. Read more

One part is listed for the 2015 Audi A4 — ÜRO PARTS 5N0827566T.

This table covers the combination / turn-signal switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too. Read more

7 Turn Signal Switch parts for the 2015 Audi A4 come from 3 brands — ROSTRA, WELLS and VEMO. The "Popular" part is WELLS 1S14794.

The Economy section: 1 option from VEMO. VEMO V15803313 is listed in this group.

Standard Replacement: 6 parts, from ROSTRA and WELLS. A representative part number is WELLS 1S14794.

This group includes WELLS 1S14794, VEMO V15803313 and ROSTRA 641017 and the remaining parts above.

This table covers the relays that control the Washer Pump circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is. Read more

2 Washer Pump Relay parts for the 2015 Audi A4 come from 2 brands — STANDARD MOTOR PRODUCTS and WELLS.

Part numbers include STANDARD MOTOR PRODUCTS RY577 and WELLS 1R2303.

This table covers the Wiper / Washer switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too. Read more

7 Wiper / Washer Switch parts are listed for the 2015 Audi A4, from ROSTRA and WELLS. WELLS 1S14794 carries the "Popular" badge.

This group includes WELLS 1S14794, ROSTRA 641017 and ROSTRA 641018 and the remaining parts above.